How to Make It
Place potatoes in a medium pot and cover with cold salted water. Bring to a boil, reduce heat to medium and simmer until very soft, 15 to 20 minutes. Drain well and return to pot. Stir over medium heat for 1 to 2 minutes to dry out. Mash with a potato masher.
In a medium bowl, stir together bread crumbs, garlic powder, pepper and seasoned salt. Whisk in eggs and 1 Tbsp. oil. Stir egg mixture and spinach into potatoes until thoroughly combined.
Working in batches, heat 2 Tbsp. oil in a large skillet over medium-high heat until shimmering. Add heaping tablespoons of batter to skillet. Flatten fritters with a spatula and space them so they don't touch. Cook, flipping once, until golden brown and crisp, 2 to 3 minutes per side. Repeat, adding more oil between batches, until all batter has been used. Drain on paper towels and serve hot.